I played a number game once with my game. You need to guess the number and you only have 4 tries. I will say if how many digits are correct and how many digits are on the right position. Your first try was 4215, and there were 2 digits correct, and 1 digit is correct on the right place. Your second try was 2365, and there were also 2 digits correct, and 1 digit is correct on the right place. Your third try is 5525, and none of the digits were correct. What is the correct number if the thousands digit is 6?